Glycoside Hydrolase Family 18

Activities in FamilyNod factor hydrolase (EC 3.2.1.-);
Chitin exo-β-1,4-N-acetylglucosaminidase (EC 3.2.1.-);
Di-N-acetylchitobiase / reducing-end exo-hexosaminidase (EC 3.2.1.-);
Peptidoglycan endo-β-1,4-N-acetylglucosaminidase (EC 3.2.1.-);
Chitosanase (EC 3.2.1.132);
Chitinase (EC 3.2.1.14);
Chitin exo-β-1,4-N-acetylglucobiosaminidase (EC 3.2.1.200);
[reducing end] exo-chitinase (EC 3.2.1.201);
β-N-acetylhexosaminidase (EC 3.2.1.52);
Mannosyl-glycoprotein endo-β-N-acetylglucosaminidase (EC 3.2.1.96);
Mechanism Retaining e
ClanGH-K
3D Structure Status( β / α ) 8 barrel
Catalytic Nucleophile/Basecarbonyl oxygen of C-2 acetamido group of substrate
Catalytic Proton DonorGlu (experimental)
NoteContains chitinases of classes III and V. Contains non-catalytic proteins such as xylanase inhibitor; concanavalin B; narbonin
External resourcesCAZypedia; HOMSTRAD; PROSITE;
Commercial Enzyme Provider(s)MEGAZYME; NZYTech; PROZOMIX;
Statistics GenBank accession (42170); Uniprot accession (503); PDB accession (428); 3D entries (111); cryst (2)
| 1 | 2 | 3 | 4 | 5 | 6 |
Viruses
Protein Name EC#OrganismGenBank UniprotPDB/3D
 PBCVOR070422_895R (Or0704.2.2_895R)   Paramecium bursaria Chlorella virus OR0704.2.2 AGE59258.1    
 PBCVOR070422_074R (Or0704.2.2_074R)   Paramecium bursaria Chlorella virus OR0704.2.2 AGE58965.1    
 pesp019   Peridroma alphabaculovirus AIE47750.1    
 Chitinase   Perigonia lusca single nucleopolyhedrovirus AKN80642.1    
 HT594_00030   Phenacoccus solenopsis nudivirus UDM55358.1    
 HT594_00031   Phenacoccus solenopsis nudivirus UDM55359.1    
 chitinase (PiraGV-K;PrGVORF10;Pirα-GV_ORF010)   Pieris rapae granulovirus ACZ63496.1
ADO85435.1
AHD24839.1
   
 chitinase   Pieris rapae granulovirus WV1010 UOS85684.1    
 chitinase (ChiA)   Plodia interpunctella granulovirus AKU75682.1    
 chitinase   Plodia interpunctella granulovirus APO13894.1    
 chitinase   Plutella xylostella multiple nucleopolyhedrovirus ABE68509.1    
 chitinase (Orf108)   Pseudalatia unipuncta granulovirus Hawaiin ACH69458.1    
 chitinase (Orf-64)   Pseudoplusia includens SNPV IE AJD80754.1    
 chitinase   Rachiplusia nu nucleopolyhedrovirus QEI03607.1    
 chitinase   Rachiplusia ou MNPV AAN28026.1
NP_703113.1
   
 ORF (fragment)   Salmonid herpesvirus 3 AGB07607.1    
 ORF (fragment)   Salmonid herpesvirus 4 AGB07608.1    
 glycoprotein, partial (fragment)   Salmonid herpesvirus 5 AKN78990.1    
 chitinase (ChiA)   Samia cynthia nucleopolyhedrovirus Nagano BBD50638.1    
 chitinase (ChiA)   Samia ricini nucleopolyhedrovirus Mondulkiri BBD51246.1    
 chitinase (ChiA)   Samia ricini nucleopolyhedrovirus Son La BBD51398.1    
 Satyrvirus21_9 (fragment)   Satyrvirus sp. AYV85525.1    
 chitinase (fragment)   Spilarctia obliqua nucleopolyhedrovirus QNN89329.1    
 VCHI   Spodoptera cosmioides nucleopolyhedrovirus QEI03423.1    
 chitinase   Spodoptera eridania nucleopolyhedrovirus AXU41619.1    
 chitinase   Spodoptera eridania nucleopolyhedrovirus QNV47777.1    
 chitinase (ChiA)   Spodoptera exempta nucleopolyhedrovirus 244.1 QAT90304.1    
 SENV_ORF16 (ChitinasE) (fragment)   Spodoptera exigua multiple nucleopolyhedrovirus AYN44976.1    
 chitinase   Spodoptera exigua multiple nucleopolyhedrovirus QKO28898.1    
 chitinase   Spodoptera exigua multiple nucleopolyhedrovirus UWK31542.1    
 ORF19   Spodoptera exigua multiple nucleopolyhedrovirus AAF33549.1
CDG72362.1
CDG72499.1
CDG72636.1
CDG72773.1
CDG72925.1
CDG73062.1
CDG73199.1
NP_037779.1
   
 Sf22   Spodoptera frugiperda multiple nucleopolyhedrovirus ADV91253.1
ADV91255.1
AFH58973.1
AIW01432.1
   
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus QED39935.1    
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus QED40222.1    
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus QED40078.1    
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus QRN46134.1    
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus QWS70802.1    
 chitinase, partial (fragment)   Spodoptera frugiperda multiple nucleopolyhedrovirus UTJ95251.1    
 chitinase, partial (fragment)   Spodoptera frugiperda multiple nucleopolyhedrovirus UTJ95247.1    
 chitinase, partial (fragment)   Spodoptera frugiperda multiple nucleopolyhedrovirus UTJ95255.1    
 chitinase   Spodoptera frugiperda multiple nucleopolyhedrovirus 3AP2 ABM45733.1
ABV82986.1
ABV82995.1
   
 chitinase (ChitA)   Spodoptera littoralis nucleopolyhedrovirus AYU75230.1    
 SlsnVgp038   Spodoptera littoralis nucleopolyhedrovirus AGE89893.1
QIZ64095.1
   
 KBIHDJOI_00067 (ChiA)   Spodoptera littoralis nucleopolyhedrovirus WML75110.1    
 chitA (Orf42)   Spodoptera litura nucleopolyhedrovirus QHN73892.1    
 GACBDANE_00089 (ChiA)   Spodoptera litura nucleopolyhedrovirus WOC30904.1    
 chitinase A (ChiA) 3.2.1.14 Spodoptera litura nucleopolyhedrovirus AGN92862.1 U3LWZ3  
 chitinase   Spodoptera litura nucleopolyhedrovirus EGYPT ABY84875.1    
 chitinase (ORF42;ChiA)   Spodoptera litura nucleopolyhedrovirus FUKUYAMA ABY84879.1    
 chitinase (ORF42;ChitA;SlnVgp042)   Spodoptera litura nucleopolyhedrovirus G2 AAL01727.1
AAG02378.1
NP_258310.1
   
 chitinase   Spodoptera litura nucleopolyhedrovirus II ACI47387.1    
 chitinase   Spodoptera litura nucleopolyhedrovirus OGASAWARA ABY84883.1    
 chitinase   Spodoptera litura nucleopolyhedrovirus WV108 UQV25574.1    
 Javan630_0020   Streptococcus phage Javan630 QBX31319.1    
 chitinase   Sucra jujuba nucleopolyhedrovirus AIU41293.1    
 Terrestrivirus6_44   Terrestrivirus sp. AYV76418.1    
 chitinase   Thysanoplusia orichalcea nucleopolyhedrovirus AGA16275.1    
 Trvi_ORF58   Trabala vishnou gigantina nucleopolyhedrovirus wuqi QYC92664.1    
 chitinase   Trichoplusia ni granulovirus AOW41438.1    
 chitinase   Trichoplusia ni single nucleopolyhedrovirus QBI90286.1    
 chitinase   Trichoplusia ni single nucleopolyhedrovirus AAZ67432.1    
 TnSNPV_135   Trichoplusia ni single nucleopolyhedrovirus WV578 UPO71229.1    
 TraeNPV_gp111 (ChitinasE)   Troides aeacus nucleopolyhedrovirus QCF61009.1
QCF61009.2
   
 ORF   Tupanvirus deep ocean QKU34406.1    
 glycosyl hydrolase family 18   Tupanvirus deep ocean QKU33651.1    
 ORF   Tupanvirus deep ocean QKU33527.1    
 chitinase, GH18 family   Tupanvirus soda lake QKU34891.1    
 ORF   Tupanvirus soda lake QKU34760.1    
 ORF   Tupanvirus soda lake AUL78592.2    
 ORF (fragment)   Vibrio phage BONAISHI AXH70979.1    
 ORF   Weizmannia phage Youna2 UKM63130.1    
 membrane glycoprotein   white sturgeon herpesvirus 2 ALP73385.1    
 ORF56   white sturgeon herpesvirus 2 WWU01345.1    
 ORF56   white sturgeon herpesvirus 2 WWU01552.1    
 ORF46   white sturgeon herpesvirus 2 SRWSHV (Snake River White Sturgeon Herpesvirus) AEF97704.1    
 ORF   Wiseana iridescent virus ADO00363.1    
 XecnGVgp103 (Orf103)   Xestia c-nigrum granulovirus AAF05217.1
NP_059251.1
   
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